Texas Instruments TI-1706+

Date of introduction:  1993 Display technology:  LCD
New price:   Display size:  8
Size:  4.5" x 2.5" x 0.4"
 115 x 63 x 10 mm3
Weight:  1.6 ounces, 46 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 11 year 1993
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

TI-1706PLUS_BACK.jpg (174390 Byte)The TI-1706+ got again a rounder shape and different keys compared to the earlier TI-1706 III introduced six years earlier. 

An identical housing in different colors was used with both the TI-106 and TI-1722+ CLEAR CALC calculator.

TI-1706PLUS_PCB.jpg (339042 Byte)Dismantling this TI-1706+ calculator manufactured in November 1993 by Nam Tai Electronics, Inc. in China reveals a clean design centered around an unknown single-chip calculator circuit bonded in Chip-on-Board (COB) technology directly onto a double-sided printed circuit board (PCB) and powered by four solar cells.

Inspecting the PCB of this TI-1706+ calculator brought our attention to two small marks reading TI-106 and DA312 confirming its relationship to the TI-106. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

Within three years the design of the calculator was changed, don't miss the next generation of the TI-1706+.

The TI-1706+ is featured in the Texas Instruments Incorporated sales catalog CL-1233 dated 1994.


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Joerg Woerner, February 17, 2003. No reprints without written permission.